Final answer:
To calculate the time it will take Ms. Miller to walk to school, divide the distance by the speed. In this case, the answer is approximately 3 hours.
Step-by-step explanation:
To calculate the time it will take Ms. Miller to walk to school, we can use the formula: time = distance / speed. In this case, the distance is 8 miles and the speed is 2.3 miles per hour. So, the time it will take her to get to school is 8 / 2.3 = 3.48 hours.
Since we need to round to the nearest whole number, the answer is approximately 3 hours.